You don't have to do the weapons in order.

You'll need a lot of energy crystals(and pulse ammo) so head to Esthar and fight some Elnoyles (if this is after the lunatic pandora chase thing, there should be a guy in the middle of the city that'll attack you with them every time you talk to him. easy way to get a lot of energy crystals)

Go fight on long horn island for adamantine-- it's near galbadia, and you can get there on the garden, 'cause it's like mile million miles long, and has beaches on each side. It looks like a horn (obviously) and has a hidden draw point at the end. I'm not sure if you have to be on the beach to find Adamantoises or not, but I know for sure that you can find them there.

Do not mug them. (Although it seems like I mugged one and got one adamantine in the item list, but you want to get a lot of them (you only ever need one Whisper) 'cause then extras can be used for refining Vit+s)

Dragon Skin and Dragon Fins can probably both be gotten from the nasty blue dragons (The ones that cast all the status spells and look like they've got adhd) on island closest to hell. Else get some dragon skin from t-rexaurs

Fury Fragments-- well, ruby dragons give them out? X.x I can't think of anything else, and that might be wrong(actually a lot of these might be wrong:P)

Windmills-- thrustaeviuses?

Regen Ring-- Can you refine life rings to these? If so the creepy head sticking out of the ground dudes around winhill might get you some, else take on the toramas (big nasty tiger kitty that casts lvl 5 death) in esthar.

Force armlet-- buy one?

Star Fragment-- Iron Giants give them off, and I think t-rexaurs do too.

Curse spike-- Refine the tri-head or tri-point cards (or fight the tri-heads themselves on island closest to heaven.)

screw-- if you don't have one of these you should be ashamed of yourself. go fight some of the geezers.

dino bone-- t-rexaur

moon stone-- torama. Might need to steal

sharp spike-- refine. . .some other kind of card. The one with the spider thingy that you find down in centra in the forest near edea's house

malboro tentacles-- fight some malboros or be lame and refine cards. Fighting them is much more fun (some other lamers like to mug them and run. I say fight and devour them when you don't need anymore tentacles)

I think that's most of themX.x;